A method for forming stator and rotor iron cores

Abstract

The invention relates to the technical field of die equipment, in particular to a method for forming stator and rotor iron cores. The method for forming the stator and rotor iron cores comprises the steps of material preparation, riveting and heating forming; and placing the iron core in an out-of-die heating device to be heated to form the iron core. Through out-of-die iron core heating, the problem of limited internal space of a die can be effectively solved; further, the die can adopt a large rotary structure, so that the thickness of the whole steel sheet is stamped more uniformly, the noise problem caused by the thickness deviation of the silicon steel sheet and the poor rotation problem caused by contact of a rotor and a stator are effectively avoided, meanwhile, other problems caused by non-uniform mass distribution of the iron core are fundamentally solved, the production difficulty is reduced, and the production efficiency is greatly improved; and meanwhile, the heating deviceis arranged outside the die, so that the internal space of the die gives full play to a stamping function without interference, and production of products with complex shapes can be realized.

Description

technical field [0001] The invention relates to the technical field of mold equipment, in particular to a method for forming stator and rotor iron cores. Background technique [0002] At present, the iron core production in the motor industry at home and abroad is produced by traditional buckle point riveting (buckle point riveting, which leads to large motor volume and low performance) and is developing towards the direction of no buckle point iron core to reduce core magnetic loss, thereby improving motor performance and further improving Product competitiveness. [0003] Please refer to Figure 1 to Figure 3 , in the prior art, the invention patent CN109940090A provides a viscose mold technology method, which changes the traditional buckle point stacking riveting structure or welding structure into a coating sticking structure, and heats the coated material iron core in the mold, and the mold The lamination process is automatically completed within the machine to complet...

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that laser welding equipment needs to be installed in the mold, and the requirements for welding equipment solder joints and accuracy control are high, and the production efficiency is low; due to the limited space in the mold, the mold cannot adopt a large rotary structure, due to the thickness deviation of the silicon steel sheet. The problem of noise, poor rotation caused by the contact between the rotor and the stator, and other quality problems cannot be solved; the production of products with complex shapes cannot be realized

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